Book review: Bloodlands is as apt a title for a history of Poland, Belarus and the Ukraine under Stalin and Hitler as it is for one of modern Cambodia or Rwanda. Timothy Snyder focuses on the horrific mortality among civilians in the vast area between Germany and Russia: Ukrainian peasants in the collectivisation of 1929-33, Jews between 1941 and 1945, Poles between 1939 and 1945, and Belarusians from Stalin's 'Great Terror' in 1937 to the retreat of the Germans in 1944.

As western Sudan continues to suffer, much international attention has focused on whether to call what is happening there "genocide." Yet once the term was invoked, it did not trigger outside intervention. Terminology turns out to matter far less than was expected. And once more, the world has dithered while people die.